package com.allen.config;

import com.allen.common.JacksonObjectMapper;
import lombok.extern.log4j.Log4j;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @author dragon1006xu@gmail.com
 * @create 2022/2/11 14:07
 */
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    /*
    配置静态处理资源
     */
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
      log.info("开始静态资源映射...");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器");
        //1.创建消息转换器
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //2.在消息转换器中设置对象映射器
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //3.通过索引设置 让我们自定义的对象转换器在最前面生效
        converters.add(0, messageConverter);
    }
}
